Improvement in machines for jointing staves



Patented April 4, 1876.

N-PETERS, PH HER. WASHINGTON D C 2 SheetS-Shet 2. H. B. CORNISH & C. P. HUNT- MACHINE FDR JOINTING STAVES'.

No. 175,669. Patented April 4, 1876.

Wi inem'esr jnv ezziarx ".PETERS. FHOTOJJTNOGRAPHEIL WASNINGTON. DHO,

' "NITED 1 STATES A OF -Ion HARRY B. CORNISH AND CHARLES P. HUNT, OF MINNEAPOLIS, MINNESOTA,

ASSIGNORS OF TWO-THIBDS THEIR RIGHT TO J. D. PUTNAM 8t 00., OF

RIVER FALLS, AND ISRAEL GRAVES,-OF HUDSON, WISCONSIN.

IMPROVEMENT IN MACHINES FOR JOlNTlNG STAVES.

Specification forming part of Letters Patent No. 175,669, dated April 4, 1876; application filed December 4, 1875.

have invented an Improvement in Machines for J ointiug Staves, of which the following is a specification:

This invention relates to improvements in machines for jointing the staves or giving to the edges of the staves a straight and square surface, and the required curve, taper, or bilge; and the invention consists in the combination of devices for accomplishing said object, as will be hereinafter fully described, and pointed out in the claims.

In the accompanying drawing, forming part of this specification, Figure 1 is a perspective view. Fig. 2 is a plan view. Fig. 3 is a section through 3 y of Fig. 2. Fig. 4 is a side elevation. Fig. 5 is a section through 00 x of Fig. 2. Fig. 6 is an end view, with a portion broken away to show the slot.

A A is the main framing of the machine, upon which some of the operating mechanism is mounted. B is the form, upon which the stave to be jointed is confined, and the form is secured to the sliding beam 1) in any suitable manner. The form is constructed of the same bilge as the barrel or cask to be made, and is provided with two hooks. i i, for securing the stave thereon. One end of the stave to be jointed is first placed under the book i, and the other end is then sprung under the spring-hook t" by means of the pivoted springlever a, operated by means of the connectingrod a and foot-lever a, as clearly shown in the drawing. The beam b is provided on its under side with a longitudinal slot, 12, fitting over the guide 0, and capable of a sliding longitudinal movement thereon. This guide is securely attached to a shaft, D, capable of an oscillating or swinging movement, for the purpose of allowing the beam and form carrying the stave to be swung from one side to the other, so that the stave can be operated upon both sides by the two saws E E, as will be hereinafter explained.

The shaft and guide carrying the beam and form can be secured in any desired position by means of the spring-pawl h, working lll the notched segment 70 on the lever or handle 70, which turns or swings the shaft. The spring-pawl is operated through the medium of the pivoted and slotted foot-lever m and connecting-rod at, working in said slotted lever m, as clearly shown in the drawing,-

for the purpose of releasing the pawl from contact with the segment, when it is desired to change the positionof the shaft and guide each other that when the form and'beani carrying the stave is inclined toward one of the saws, and pushed forward on the guide, one side of the stave is finished by said saw, and when inclined toward the other saw, and drawn back on the guide, the other side of the stave is finished by the other saw. The stave is then removed from the form and a new one inserted, in the manner hereinbetore described, when the"operation is repeated.

It will be perceived that the center upon which the beam swings or oscillates is, from the top of the form, one-half the diameter of the cask or barrel to be made, and each saw is inclined in the direction of this center, their plane passing through it. With this particular difference the staves, when set up together, should touch first on the inside corner in or-- der to. make a tight joint. The saws, therefore, are not inclined quite enough to strike the center, but pass it on either side, as clearly shown in Fig. 2, thus leaving the stave a little full on the inside for the purpose stated. The saws are operated through the medium of belts and pulleys, as clearly shown in the drawing.

In a full-sized machine the inclination of the saws will be made adjustable, and also the position of the center upon which the form moves, so that any size of cask or barrel can be made. By the above-described machine a wide or narrow stave gets. exactly the right joint, and both ends of the stave will be ex- Q actiy-the same width; therefore one size head h, of the connecting-rod n and pivoted and will fit either end of the cask or barrel exactly slotted foot-lever m, for the purpose specified.

alike. In testimony that we claim the foregoing we We claim as our invention have hereunto set our hand. 1. The combination, with the form B, having HARRY BUTTON OORNISH. book i and spring-hook i, of the spring-lever CHARLES PLAT HUNT. a, connecting-rod a, and foot-lever a, for the Witnesses: purpose specified. ABNER MORSE,

2. The combination, with the spring-pawl JOHN DAY PUTNAM. 

